Extension Builders in New Malden

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.2 (22 reviews)

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Some of our top rated extension builders in New Malden

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LONDAMEXP
No reviews yet
Extension Builder in New Malden
Established by industry experts, LONDAMEXP Construction is a London based home refurbishment business. LONDAMEXP Construction combines more than a decade of experience and expertise to provide commendable refurbishment services. We have been in service since the past 15 years in the UK and NL!
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anova design ltd
No reviews yet
Extension Builder in New Malden
Full scale extensions, lofts, refurbishments and new builds. Qualified and experienced tradespeople, design services.
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SMAA Construction Ltd
Rating: 5 out of 5
Extension Builder in New Malden
Hi, my name is Adrian a master in building by now with over 15 years of working experience in the building industry passed down from generation to generation.Me and my team guarantee quality and dedication towards the projects we receive and treat them as our very own. We specialise in all means building with a specialist in each domain.
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Latest review:
Restoration & Refurbishment- 2 Jun 2025
Adrian and his team were reliable, punctual and detailed with their work. Finish was great. Touched up the paint in surrounding walls due to dust and marks from the ceiling. slightly pricier than other quotes we received but we felt at ease with Adrian so went ahead.
GreatGroundworks
No reviews yet
Extension Builder in New Malden
Groundworks and bespoke building Steel works Electrical plumbing Carpentry
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LuxeBrit Group LTD
No reviews yet
Extension Builder in New Malden
LuxeBrit Group - "Transforming Spaces, Building Better Communities" We offer turnkey building solutions for commercial & residential clients across England & Wales. Our services include: - design & building construction projects - extension/renovation of buildings - electrical, heating & mechanical installations LuxeBrit Group is a leading construction services company known for innovation and financial stability. We provide a comprehensive range of services across the entire construction industry, covering everything from design and planning to construction, property maintenance, operation, and demolition. "Our goal is to provide our clients with the highest level of transparency, communication, and collaboration, ensuring they are fully informed and engaged throughout the entire construction process."
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Costello’s construction
No reviews yet
Extension Builder in New Malden
Hello it’s Owen from Costello’s construction here, we as a company bring great service from the moment we start to the moment we finish. We cover all aspects of building from big projects to small projects supply top quality work which is always to a customers satisfaction as we like to keep our very good reputation up to standards also keeping our customers happy. The main thing for us as a business is that we always like to work with the customer closely to make sure they get the best job for the best price we can. Thanks Owen from costello’s construction
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Global Gate Homes UK Ltd
New on MyBuilder
Extension Builder in New Malden
Global Gate Homes UK Ltd specialises in quality home extensions across London and surrounding areas. Backed by 20+ years of construction expertise and a Master's degree in Engineering, we deliver projects with precision and care. ✓ £10 million Public Liability Insurance ✓ Companies House registered ✓ HMRC compliant Free, no-obligation quote available.
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Pineapple Property Search Ltd
No reviews yet
Extension Builder in New Malden
We have recently registered with my builder, however our team have been developing property throughout London over the last 7 years. Throughout this time, we have cultivated a broad range of contacts with trades and material suppliers. We offer a turnkey service, coordinating all phases of a project including initial design, permissions, tendering, souring materials and build phase. We undertake projects of all sizes and place an emphasis on delivering a professional and reliable service.
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Akash
No reviews yet
Extension Builder in New Malden
We can work all over London
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Bask construction
No reviews yet
Extension Builder in New Malden
Backed by more than 30 years’ experience in the industry, Bask Construction Ltd have established themselves as one of the leading installers of all types of suspended ceilings, walls, and partitions in the Greater London area. From drywall to demountable partitioning systems, our installations are always completed to the highest possible standard.
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Longstone Builders Limited
No reviews yet
Extension Builder in New Malden
We are a family run building company, established in the year 2000. Our prices have always been found to be very reasonable and most of our work has been from word of mouth without the need to advertise. The majority of our work has been the conversion of houses into flats, but we have also undertaken numerous new builds, extensions and loft conversions. All our work is fully guaranteed and insured for all liabilities.
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A Interiors Ltd
No reviews yet
Extension Builder in New Malden
Well established in the Greater London area, A Interiors Ltd is a trusted construction company. Skilled, reliable, and hard-working, have more than 30 years’ combined experience of delivering internal construction services and projects on time and budget, taking all the hassle out of renovating your property. Primarily serving commercial & residential clients in London and the surrounding areas. We take all sort of works like; loft conversion, etc.. Get in touch today for further details.
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LIVAHAUS
Rating: 5 out of 5
Extension Builder in New Malden
We are a professional team and we are very responsible, punctual and on time with our work .
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Latest review:
Tiling- 16 Feb 2026
Luis did an excellent job on my bathroom. He had to do a lot of prep work before starting the tiling, including rebuilding the floor and repairing the walls. At every stage he explained what needed to be done, ensured that I wanted to go ahead, listed the materials that would be needed, and the cost. It made a huge different to me that Luis was willing to source and purchase all materials; he checked in with me from the suppliers as to choice and cost, and sent receipts for every penny. I cannot recommend him highly enough, for his knowledge and expertise, his honesty and hard work, and also for being such a lovely person, nothing is too much trouble. I am delighted with my new bathroom, and am planning more home improvements with Luis, when he is free again!
Klodi
No reviews yet
Extension Builder in New Malden
I do renovations, kitchen and bathrooms, flooring, tiling and every preparation that goes with them,,, Knowing that quality of my work was the reason I felt complete in the end of the day I started working on my own. New here, and ready to give what I am capable to do to every homeowner !
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Mandeep
No reviews yet
Extension Builder in New Malden
Hi I’m professional builder. Specialist in all type of building work
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Watan
Rating: 4.5 out of 5
Extension Builder in New Malden
Hi everyone, Here at Watan Building & Renovation Ltd we undertake all aspects of domestic construction works. We have been trading for over 10 years, we are happy to give advice and free estimate on your work so please get in touch.we carry out all works on domestic buildings such as: Full house renovation, Bathroom, Kitchen, plastering, Flooring, Rendering Decorating, Electric, Plumbing (gas safe) Chimney removal, Fencing, Extension with a fantastic quality work and reasonable price.
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Latest review:
Plastering- 28 Jul 2025
Watan and his worker did a fantastic job on the lime plastering, will certainly be using in future. Extremely affordable and professional with clear communication throughout.

4.2

Top rated Extension Builders

Our Extension Builders in New Malden, are rated 4.2 out of 5 based on 22 reviews from customers like you.

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What types of services are offered by local extension builders in New Malden?

Building an extension is a major milestone for any home. It’s not just about adding extra space, it’s a big step that can transform how you live day to day, opening up new possibilities for comfort, lifestyle, and family needs.

This is why it’s so important to find the right extension builders in New Malden for you. They can help with a variety of tasks and projects, including:

Extending your home with an extra room
Two+ storey extensions
Adding partition walls to create more rooms
Building annexes or external structures

To find the right extension builder near you, simply post your job on MyBuilder. Explain the type of help you’re looking for, and then home extension builders in New Malden who are available and interested can respond to your post.

Browse profiles, read customer reviews and get quotes from your chosen New Malden extension builders, all before you decide who to hire.

What are the hourly rates of extension builders in New Malden?

Before getting started with your extension project, it’s important to have a clear budget in place. On average, extension builders in New Malden will charge between £16 and £42 per hour.

Single-storey rear extensions cost between £20,000 and £60,000 depending on size and finish.
The cost of double-storey extensions, which add more space and value, can range from £100,000 to over £170,000.
Larger wrap-around extensions that combine multiple extension types can range from £40,000 to over £120,000.

The cost of an extension will vary depending on your property. For instance, extending in certain areas may require structural adjustments to ensure stability, which can increase your material and labour costs.

To get an accurate price for your home extension, request detailed quotes from several New Malden extension builders near you on MyBuilder. This allows you to compare what each quote covers and how much your New Malden home extension project is likely to cost.

Find extension builders in New Malden with MyBuilder

Hiring the right extension builder in New Malden with MyBuilder couldn’t be easier. Just follow these simple steps:

Step 1: Post your extension project on MyBuilder

Whether you’re planning a single-storey extension, a loft conversion, or adding a new room, post your job on MyBuilder to find local New Malden extension builders. Once your job is live, we’ll share it with home extension builders in New Malden who can express their interest.

Step 2: Compare different extension builders in New Malden

When you start receiving interest, review profiles of local New Malden extension builders, check their previous work, and read real customer reviews. Ask about timelines, materials, and request detailed quotes.

Step 3: Hire New Malden extension builders with confidence

After gathering all the information and quotes from your chosen home extension builders in New Malden, compare their experience, guarantees, and costs before choosing who to hire.

You’ll also have confidence knowing that every tradesperson on MyBuilder is verified through several checks, including:

ID verification: When a tradesperson joins MyBuilder, we ask for a valid ID, such as a passport, ID card, or eIDAS certificate.
Company verification: For tradespeople operating under a company, we make sure every tradesperson has a registered business.

Did you know? Our continuous monitoring and complaints process ensures that tradespeople who don’t meet our standards are promptly removed from MyBuilder’s platform.

New Malden extension builders are ready to help. Use MyBuilder today to find the right professional for your home extension.

What to ask a New Malden extension builder before hiring?

Before hiring an extension builder in New Malden or extension building company in New Malden, ask a few key questions to make sure you’re choosing the right professional for your home extension project.

What qualifications and experience do you have as an extension builder in New Malden?

An extension builder in New Malden should have a strong track record with similar projects and relevant building qualifications or trade memberships, such as the Federation of Master Builders (FMB) or TrustMark.

Will my home extension meet all building regulations and planning requirements?

Your New Malden extension builder should ensure the project complies with Building Regulations and, where necessary, handle or assist with planning permissions. Ask how they manage building control inspections and what documentation you’ll receive once the project is complete.

What experience do you have with similar extensions in New Malden?

Ask to see examples of their previous work, or view examples of their work on MyBuilder. Ideally projects similar to yours in scale and design. This helps you assess the New Malden extension builder’s ability to deliver a result that meets your expectations.

How long will the extension take to complete?

Extension project timelines can vary depending on size, complexity, and weather. A typical single-storey extension might take around 8 - 12 weeks. Request a detailed schedule so you know what to expect and when key milestones will be reached.

Do you offer a guarantee for your work? Most New Malden extension builders offer a guarantee or warranty on their work, often between 1 and 10 years depending on the project and materials used. This gives you assurance that any issues will be resolved after completion.

If you still have questions about the professional you are looking to hire, we have a full detailed guide on hiring the right builder here.

FAQ: Common questions about home extensions in New Malden

Can an extension builder in New Malden help with planning permission?

Yes, many extension builders in New Malden can guide you through the planning process. They can help prepare drawings, advise on local requirements, and liaise with your local council to ensure your project meets all necessary regulations.

Can an extension builder in New Malden handle everything from design to construction?

Many New Malden extension builders offer full design-and-build services, managing both the architectural planning and construction stages. Ask your builder whether they can provide a complete package or if you’ll need to hire an architect or designer separately.

Will an extension builder in New Malden help with materials and finishes?

Yes, most extension builders in New Malden can source materials and offer advice on finishes that suit your design and budget. You can also choose to supply certain materials yourself, just make sure this is agreed upon before work starts.